SKWAirsoft sends in news about their new Zoxna 40mm Gas Grenade Shells... "SKWAirsoft presents the new 40mm Zoxna grenade. New inside mechanism with increased performance and reliability, overcoming rest of grenades in the market. Compatible with MadBull mosquito grenade launchers (and similar models), grenade launcher ICS GLM-190, pistol grenade launcher S-Thunder, and pistol grenade launcher from Cyma."